There may be some disciples whose root of merit is not yet mature, whose control of mind is weak and whose power of application is limited -- and yet who are sincere in their purpose to seek enlightenment -- these for a time may be beset and bewildered by maras and evil influences who are seeking to break down their good purpose.
Such disciples, seeing seductive sights, attractive girls, strong young men, must constantly remind themselves that all such tempting and alluring things are mind-made, and, if they do this, their tempting power will disappear and they will no longer be annoyed.
Or, if they have visions of heavenly gods and Bodhisattvas and Buddhas surrounded by celestial glories, they should remind themselves that these, too, are mind-made and unreal.
Or, if they should be uplifted and excited by listening to mysterious Dharanis, to lectures upon the paramitas, to elucidations of the great principles of the Mahayana, they must remind themselves that these also are emptiness and mind-made, that in their essence they are Nirvana itself.
Or, if they should have intimations within that they have attained transcendental powers, recalling past lives, or fore-seeing future lives, or, reading others' thoughts, or freedom to visit other Buddha-lands, or great powers of eloquence, all of [these] may tempt them to become covetous for worldly power and riches and fame.
Or, they may be tempted by extremes of emotion, at times angry, at other times joyous, or at times very kind-hearted and compassionate, at other times the very opposite, or at times alert and purposeful, at other times indolent and stupid, at times full of faith and zealous in their practice, at other times engrossed in other affairs and negligent.
All of [these] will keep them vacillating, at times experiencing a kind of fictitious samadhi, such as the heretics boast of, but not the true samadhi. Or later, when they are quite advanced [they] become absorbed in trances for a day, or two, or even seven, not partaking of any food but upheld by inward food of their spirit, being admired by their friends and feeling very comfortable and proud and complacent, and then later becoming very erratic, sometimes eating little, sometimes greedily, and the expression of their face constantly changing.
Because of all such strange manifestations and developments in the course of their practices, disciples should be on their guard to keep the mind under constant control.
They should neither grasp after nor become attached to the passing and unsubstantial things of the senses or concepts and moods of the mind. If they do this they will be able to keep far away from the hindrances of karma.